update comment on MinimumChainWork check

.cirrus.yml

@@ -182,6 +182,7 @@ task:
   persistent_worker:
     labels:
       type: medium
+  timeout_in: 240m  # larger timeout, due to the high CPU demand
   env:
     FILE_ENV: "./ci/test/00_setup_env_native_fuzz.sh"
 

.github/README.md

@@ -0,0 +1 @@
+../doc/benchcoin.md

.github/workflows/benchmark.yml

@@ -0,0 +1,121 @@
+name: Benchmark
+on:
+  pull_request:
+    branches:
+      - master
+jobs:
+  build-binaries:
+    runs-on: [self-hosted, linux, x64]
+    env:
+      NIX_PATH: nixpkgs=channel:nixos-unstable
+      BASE_SHA: ${{ github.event.pull_request.base.sha }}
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+      - name: Fetch base commit
+        run: |
+          echo "CHECKOUT_COMMIT=$(git rev-parse HEAD)" >> "$GITHUB_ENV"
+          git fetch --depth=1 origin ${{ github.event.pull_request.base.sha }}
+      - name: Setup ccache
+        run: |
+          mkdir -p /data/ccache
+          export CCACHE_DIR=/data/ccache
+          export CCACHE_MAXSIZE=50G
+          ccache -M 50G
+          ccache -s
+      - name: Build both binaries
+        env:
+          CCACHE_DIR: /data/ccache
+        run: |
+          mkdir -p ${{ runner.temp }}/binaries/base
+          mkdir -p ${{ runner.temp }}/binaries/head
+          nix-shell --command "just build-assumeutxo-binaries-guix $BASE_SHA $CHECKOUT_COMMIT"
+          cp binaries/base/bitcoind ${{ runner.temp }}/binaries/base/bitcoind
+          cp binaries/head/bitcoind ${{ runner.temp }}/binaries/head/bitcoind
+      - name: Upload binaries
+        uses: actions/upload-artifact@v4
+        with:
+          name: bitcoind-binaries
+          path: ${{ runner.temp }}/binaries/
+  assumeutxo:
+    needs: build-binaries
+    strategy:
+      matrix:
+        include:
+          # - network: signet
+          #   timeout: 20
+          #   utxo_path: /var/lib/bitcoin/utxo-signet-160000.dat
+          #   dbcache: 550
+          # - network: mainnet-default
+          #   timeout: 600
+          #   utxo_path: /var/lib/bitcoin/utxo-840000.dat
+          #   dbcache: 550
+          - network: mainnet-large
+            timeout: 600
+            datadir_path: /data/pruned-840k
+            dbcache: 32000
+    runs-on: [self-hosted, linux, x64]
+    timeout-minutes: ${{ matrix.timeout }}
+    env:
+      NIX_PATH: nixpkgs=channel:nixos-unstable
+      ORIGINAL_DATADIR: ${{ matrix.datadir_path }}
+      BASE_SHA: ${{ github.event.pull_request.base.sha }}
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+      - name: Download binaries
+        uses: actions/download-artifact@v4
+        with:
+          name: bitcoind-binaries
+          path: ${{ runner.temp }}/binaries
+      - name: Set binary permissions
+        run: |
+          chmod +x ${{ runner.temp }}/binaries/base/bitcoind
+          chmod +x ${{ runner.temp }}/binaries/head/bitcoind
+      - name: Fetch base commit
+        run: |
+          echo "CHECKOUT_COMMIT=$(git rev-parse HEAD)" >> "$GITHUB_ENV"
+          git fetch --depth=1 origin ${{ github.event.pull_request.base.sha }}
+      - name: Run AssumeUTXO ${{ matrix.network }}
+        env:
+          TMP_DATADIR: "${{ runner.temp }}/base_datadir"
+          BINARIES_DIR: "${{ runner.temp }}/binaries"
+        run: |
+          env
+
+          # Patch binary shared object dependencies
+          # nix-shell --command "patch-binary $BINARIES_DIR/head/bitcoind"
+          # nix-shell --command "patch-binary $BINARIES_DIR/base/bitcoind"
+
+          # Run test
+          mkdir -p "$TMP_DATADIR"
+          nix-shell --command "just run-${{ matrix.network }}-ci $BASE_SHA $CHECKOUT_COMMIT $TMP_DATADIR $ORIGINAL_DATADIR ${{ runner.temp }}/results.json ${{ matrix.dbcache }} ${{ runner.temp }}/pngs $BINARIES_DIR"
+      - uses: actions/upload-artifact@v4
+        with:
+          name: result-${{ matrix.network }}
+          path: "${{ runner.temp }}/results.json"
+      - uses: actions/upload-artifact@v4
+        with:
+          name: pngs-${{ matrix.network }}
+          path: "${{ runner.temp }}/pngs/*.png"
+      - uses: actions/upload-artifact@v4
+        with:
+          name: flamegraph-${{ matrix.network }}
+          path: "**/*-flamegraph.svg"
+      - name: Write GitHub and runner context files
+        env:
+          GITHUB_CONTEXT: ${{ toJSON(github) }}
+          RUNNER_CONTEXT: ${{ toJSON(runner) }}
+        run: |
+          mkdir contexts
+          echo "$GITHUB_CONTEXT" | nix-shell -p jq --command "jq 'del(.token)' > contexts/github.json"
+          echo "$RUNNER_CONTEXT" > contexts/runner.json
+      - name: Upload context metadata as artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: run-metadata-${{ matrix.network }}
+          path: ./contexts/